Exactly.
It's a big thing in the German car world. I disconnected the battery on a 2006 TDI we were working on earlier this year, and out of curiosity stuck a DVOM across the cables. The electrical system had ~5 volts immediately after being disconnected from the battery, and it took a couple minutes to taper down to nothing. I imagine the meter itself could have drawn a portion of that voltage off. I haven't fooled with anything else by comparison, so I don't really have any frame of reference, but that seemed odd to me.
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